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Author Topic:   Modifying a powerglide
jammin
Administrator
posted August 22, 2000 11:18 AM
Running a direct drive glide in high gear, when we go into a turn, it freewheels. It will not bring the engine back down with the driveshaft speed.....Is there a way to manipulate any pressure in the glide that will keep pressure on the high gear clutch pack when you are off of the gas? This would enable you to drive a little more with the gas and take some of the braking out of entry. Any help would be appreciated.

Jammin

[This message has been edited by jammin (edited August 22, 2000).]

TCI
Member
posted August 22, 2000 02:52 PM
A powerglide should have "engine braking". I have seen "locker style rearends" slip and cause this type of problem. The line pressure should stay about the same at whatever rpm the motor is at so the clutches should stay completely applied when in hi gear.
Hope this helps if not send me your ph# and we'll go from there.


jammin
Administrator
posted August 22, 2000 04:55 PM
We aren't running a locker, just a mini-spool. Is there a check valve in there somewhere that is not working correctly?


TCI
Member
posted August 23, 2000 09:06 AM
The only valves that move in the valve body are the throttle valve, detent valve, pressure regulator valve and the boost valve.
Everything else is blocked off. (as long as it is a TCI valvebody)

[This message has been edited by TCI (edited August 23, 2000).]

Subbey27
Member
posted August 23, 2000 12:32 PM
I've been building my own glides for 8-10 years. In the early days I installed the fittings in the front pump for the valve, and the rest of the tranny, including the valve body, was bone stock. I never encountered the the problem that you described. It does sound like it could be a pressure problem. You could check the valve connected to the front pump to make sure that it closing all the way. Also check the front pump body and gears for excessive wear. I also install a new pressure spring, that I get from Bushore, in the valve body. I also remove 4 springs from the forewar clutch piston. You could call Bill Bushore at 515-432-8130, he has been very helpful to me and a friend who don't use his transmissions.


donnie
Member
posted August 27, 2000 09:09 PM
quote:
Originally posted by jammin:
Running a direct drive glide in high gear, when we go into a turn, it freewheels. It will not bring the engine back down with the driveshaft speed.....Is there a way to manipulate any pressure in the glide that will keep pressure on the high gear clutch pack when you are off of the gas? This would enable you to drive a little more with the gas and take some of the braking out of entry. Any help would be appreciated.

Jammin
Jammin you could possibly be starving for fluid due to centrifigal force un covering the pick up under cornering, even a stock glide won,t free wheel unless some thing goes wrong, Tci offers extra capacity pans to cure this, did the problem just start?

[This message has been edited by jammin (edited August 22, 2000).]




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